A balanced diet should include a variety of nutrient-dense foods from all major food groups: fruits, vegetables, whole grains, lean proteins, and healthy fats. Incorporating a range of colorful fruits and vegetables ensures adequate vitamin and mineral intake. Whole grains provide fiber, while lean proteins are crucial for muscle repair. Healthy fats, such as those from avocados and nuts, support brain health. This nutritional variety is vital for promoting overall health and well-being.